It's a bit of an oxymoron to talk about planning in a world where the future remains fairly unknowable. Yet, the practical reality urges us to plan anyway. The conundrum calls for a reinvention of planning as a continuous process of learning and agile actions. This directly contrasts with the old idea of planning as a continuous process of assuming and fixed actions.
Agile planning doesn't mean chaos. The process can remained committed to an agreed upon set of principles and success stories. This provides the best-of-both-worlds flexible structure.